docs: def set_default_from_schema(instance, schema):
      """
      Populate default values on an `instance` given a `schema`.
  
      Parameters
      ----------
      instance : dict
          instance to populate default values for
      schema : dict
          JSON schema with default values
  
      Returns
      -------
      instance : dict
          instance with populated default values
      """
      for name, property_ in schema.get('properties', {}).items():
          # Set the defaults at this level of the schema
          if 'default' in property_:
              instance.setdefault(name, property_['default'])
          # Descend one level if the property is an object
          if 'properties' in property_:
              set_default_from_schema(instance.setdefault(name, {}), property_)
      return instance